Papers by Sahar Kheibarihafshejani
Journal of Optics, 2025
This paper proposes a method to extend the depth range of integral imaging systems by representin... more This paper proposes a method to extend the depth range of integral imaging systems by representing three-dimensional (3D) images in both virtual-real and real-real forms. The approach combines two integral imaging systems using a transmission-type retroreflector and a beam splitter (BS). The transmission-type retroreflector relays the integrated images from one display to form a real full-color 3D aerial images while preserving the resolution at extended depths. The BS combines the second integral imaging system across various depth ranges, providing additional real or virtual 3D images. The proposed method enhances the applicability of integral imaging systems in mixed-reality environments without requiring complex equipment.
Optics Express , 2025
Conventional multifocal displays deliver effective monocular focus cues but lack sufficient motio... more Conventional multifocal displays deliver effective monocular focus cues but lack sufficient motion parallax, while multi-view displays offer motion parallax with no monocular focus cues. To overcome these limitations, we propose a system that leverages the benefit of viewpoint generation and the focus-tunable lens (FTL) to support both motion parallax and accommodation cues in one system. Experimental results demonstrate that the proposed setup successfully delivers full-resolution images with support for both depth cues, providing a more realistic visual experience. A compact design, with experimental results demonstrating its effectiveness, is also introduced to further enhance the system's compactness.
Journal of information display, Apr 7, 2024
In this paper, we propose a new approach to create a compact autostereoscopic aerial multi-view d... more In this paper, we propose a new approach to create a compact autostereoscopic aerial multi-view display. It employs a transmission type retroreflector, i.e. a slit mirror array (SMA), and a digital micromirror device (DMD). The retroreflector’s unique capability generates a floating image on the opposite side in a mirror-symmetric position. The SMA creates a real image of the DMD and the array of light-emitting diodes (LEDs) positioned in front of the SMA. LEDs’ real images form an array of viewpoints, enabling users to experience diverse perspectives of the three dimensional image. We successfully validate the proposed system using five LEDs with full-resolution 4-bit depth viewpoint images. We also discuss the SMA and DMD parameters’ impact on perceived images.
Frontiers in Optics + Laser Science 2022 (FIO, LS), 2022
A method for increasing the depth of the integral imaging system by using polarization grating (P... more A method for increasing the depth of the integral imaging system by using polarization grating (PG) is proposed. The PG overlays the transferred images, by relay optic or dihedral corner reflector array (DCRA), from two displays.
Superimposition of two integral imaging systems for depth enhancement by using polarization grating and dihedral corner reflector
Frontiers in Optics + Laser Science 2022 (FIO, LS)
A method for increasing the depth of the integral imaging system by using polarization grating (P... more A method for increasing the depth of the integral imaging system by using polarization grating (PG) is proposed. The PG overlays the transferred images, by relay optic or dihedral corner reflector array (DCRA), from two displays.
Floating multi-view three-dimensional display using a digital micro-mirror and dihedral corner reflector array
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Papers by Sahar Kheibarihafshejani